This is a modified version of the Python script for the TI-Planet and
Planete Casio back to school 2020 contest.

This modified version works with Python 3 under GNU Linux and MS Windows.

The original code can be found at:

https://tiplanet.org/forum/viewtopic.php?f=49&t=24309

This script can be executed with the following command:

  python3 cavegui.py